Hinge



i l6l-1,810?

Dec. 21 1926.4

YW, H. BAKER HINGE 'Filed July 22, 1925 2 Sheets-Sheet 2 M @Maf Patented Dec. 21, 1926.

UNITE@ Svialll ifsirsoz earner urines. y

WILLIAM I-I. BAKER, F VXNDNG GULF, WEST VIRGL'NIA.

HINGE.

Application led July 22,

The invention relates to hinges of the type that cause doors with which they are associated to close after they have been opened.

Hinges made in accordance with this invention are adapted particularly for use with heavy wood-and-metal freely-swinging doors such as used in mines across passages and in other places, and the hinges are so formed and arranged that the doors may be opened when an engine or car pushes thereagainst and will close by gravitational action when the last car of a series has passed.

AWhen considered with the description herein, the characteristics of the invention are apparent from the accompanying drawings, forming part hereof, wherein an emf bodiment of the invention in association with a pair of mine-doors is disclosed, for purposes of illustration.

Like reference-characters refer to corresponding parts in the views of the drawings, of which- Fig. 1 is a view, in elevation, of the hinges in association with mine-doors;

Fig. 2 is a side elevation of the base plate;

Fig. 3 is an end elevation thereof;

Fig. e is a plan view thereof;

Fig. 5 is a section on the line 5 5, Fig. 4;

Fig. 6 is a side elevation of the pintle-end portion of one of the swingable members;

Fig. 7 is a View on the line 7 7, Fig. 6.

Having more particular reference to the drawings, A designates a sill extending across a mine passage or doorway, B posts extending upwardly therefrom at each side, C an upper transverse member on the posts positioned directly above the sill, D doors closing the passage, and E sheet-metal cov erings on the sides of the doors at places against which engines, cars, and other vehicles contact While going through the passave.

cpper right-angle plates 8 of the hinge are sunk into the posts and the upper transverse members at the corners formed thereby, and they are secured in place by bolts 9 in the posts and lag-screws 1() extending into the transverse member, the plates being formed with countersunk holes 11 to ac'- commodate the shanks and heads of the fastenings. The upper or horizontal portion of each of these plates has a substantially vertical pintle-socket 12.

Right-angle base plates 13 are positioned 1925. ieral No. 45,400.

directly below the upper plates, theyyare like the upper plates except as hereinafter described, and they are held in place at the corners formed by the sill and post in a nanner similar to the upper plates.

The horizontal portions of the base plates, which rest on the sill, have pintle-sockets 14, which are located nearer to the posts than the pintle-sockets 12 of the upper plates, and substantially midway between the sides.

rlhe horizontal portion of each base plate is characterized by a depression in its upper face extending from side to side thereof `between its ends, and the pintle-socket is lo cated at the end thereof nearer the post. rlhe bottom of the depression is a longitudinal Groove 15, which is round in cross section, and which extends longitudinally from the socket to the other end of the depression. Surfaces 16 of the depression slope laterally and upwardly from each side of the groove and socket, whereby the depression is substantially V-shape in cross section on each side of the groove and socket.`

Surfaces 17 slope downwardly from the socket end to the other end, whereby there are afforded apex lines 18, which converge from the sides of the plate to the sides of the groove at its end. The result of provision of these sloping surfaces 17 at the sides is that the surfaces 16 sloping to the groove are substantially triangular in plan with their bases or wider portions at the socket end, and the sloping surfaces 16 and 17 are divided by the more or less theoretical apes lines 18. The surfaces at the apex lines and the sloping surfaces 16 cooperate with swingable hinge members to cause a doory to close.

Each of the swingable hinge members comprises an elongated portion or strap 19, which is secured to a side of a door, and an end portion 2O turned substantially at right angles to the strap. The end portions 2() have rounded ends 21, which are substantially horizontal when the members are in place on a door, and a pintle 22 extends from the outer sides of these ends into the pintlesockets of the upper and base plates. So far as concerns the upper swingable hinge members, it is immaterial whether or not they have rounded ends capable of cooperating with the surfaces of the base plates hereinbefore described, but it is preferabl-e to make all those members substantially the same, so that they may be interchangeable.

thein, andthe doors sometimes swing f W'hile the doors are in closed position, the round-ed ends of the lower swingable ineinbers rest in the grooves of the base plates, and thereby the doors are held closed. When a door is opened, the rounded end of the hinge meinber movingI against a rounded surface of the groove and against a sloping surface 16 and along an apex line 18 slightly raises the door; and, when the door is re leased, the weight thereof iinposed by the lower end of tl e swingable hinge nieiiher on the inclined surfaces of the hase plate causes the door automatically to close. Mine-doors for which this hinge particularly is intended are heavy, and their weight- Vsufficient to cause the hinge to act as de scribed.

As the sloping surfaces of the base plate" extend to the sides thereof, the lower ends of the swingable hinge members bear against those surfaces even when the doors are entirely open, and thus the doors close antornatically froin the full-open position, which Would not be the case the lower ends reached and rested on a substantially horizontal surface at open position.

Theoretically it is necessary for closing a door only from an ana-le of 9() degrees with respect to the closed position. As a matter of fact, however, in the case of 1nine-doors. engines and cars bump st glitl y beyond the QO-degree position. lt lL4 ec `found in practice, with hinge arrangements sufh as disclosed herein, that the doors will close automatically from such extrenie positions.

Having thus described r y invention, what I claim as new, and desire to secure by Letters Pat-ent, is-

1. fr hinge con'iprising a base plate having a de nessi-on extending from side to side thereof, a pi.ntle-soelet in said depression, and a grooife extending from said socket at the base of said depression, the surface said depression sloping upwardly and later ally from each side of said groove and downwardly froin said socket toward the other end, a sivingable nieinber having a rounded end arranged to seat in said groove and to swing in contact with either of said laterallysloping surfaces, and a pintle on said ineinber adapted to seat in said socket.

2. ii hinge comprising a base plate having :its body downwardly cut away and formed with ar depression extending at one of its ends entirely theres-cross, a pintle-soclet in the other end portion of said depression, and a groove extending longitudinally fromy said socket at the hase of said depression, there being plane surfaces in said plate sloping laterally and upwardly froin each side of said groove and socket whereby said depression substantially V-shape in cross sectio-n adjacent to its median line, and there also being other plane surfaces in said plate extending to the sides thereof from said lhst-inentioiwd surfaces and sloping downwardly from the socket end to the other end of the plate; and a swingalole ineinber hava rounded end arranged to seat in said groove and to swing in contact with either of said laterally-sloping surfaces anda pinitle adapted to seat in said socket.

ln testimony whereof l affix iny signature.

WILLIAM ii. BAKER. 

